Yes, the game is full of dismemberment but the Japanese version has white-blooded cyborgs, which apparently lets the game bypass the whole "no-dismemberment" thing. I think that only goes for humans, though, so that's why they kept the white blood as a way to further drive the point that what you're killing are cyborgs.
Bougyo no tame no bougyo nashi. "There is no defense for defense's sake." - Kendo saying. PSN: Spearman-Rho
I did always imagine it as more of a brace on his arm
Could also be that it was so borderline that they didn't want to tempt the Japanese censors so they made it purposefully vaque as to wether it is or not.
Wasn't it also the case in the International releases as well? I doubt that was the reason. After all, the Japanese version, besides the White Blood aspect, also altered the scenes showing violent deaths to be significantly less graphic (like panning away or something), while America got all the excessive violence. I'm pretty sure they would have had something similar occur with Sam had that been the case.
Censorship laws are dumb everywhere, Japan is just the ur example. I was playing Onimusha 3 recently and any blood from enemies was green. Even humans were bleeding green. And that's an american copy of the game.
Frank Zappa is God. Fact. King of Heroes, do you have enough swords?!
This is quoted directly from the MG Wiki " Upon his death, it was discovered that Sam had barely had any cyborg enhancements at all; in fact, besides his exoskeleton that encases his otherwise-human body, it is possible that only his right arm is actually purely cybernetic" so given this info I'd be more inclined to agree with this because its congruent with the official bio of Samuel.
Lastly anyone who viewed their fight can see his arm being torn off by Armstrong. So the damage was to his shoulder meaning it was virtually impossible to reattach his with that amount of structural damage being done to his human frame. So a full cybernetic replacement would be justified. And if some of you need more of a visual aid at this point reference Ed Elric's automail arm.